Project Koi Pond

Michael Scott
by Michael Scott
5 Materials
3 Days

Recently moved and have an existing pond that I need to relocate. I have some Koi that I’ve raised from babies and not ready to part with, I also enjoy watching and listening to the water flow in the evening after a hard days work.

Since my close friend had access to a backhoe, I had him dig out the deeper part of the pond. You can do by hand just takes longer. I then began to dig out the rest of the pond. I wanted a shallow area for placing plants, etc.

I placed the liner and filled with water. I used bricks to temporarily hold the liner in place. I took another Hometalkers advice and went inside to view the pond from a window to be sure I was happy with placement.

Placed flat rock around liner an prepared it for fish, plants, water filters. I recommend at least a 20mil liner, I started with one of lesser quality and quickly regretted and ordered a replacement.

Added some plants and a brick border. Installed water filters and added water Lillie’s and a few floating hyacinth. Added the Koi and a little blue dye to help with algae control.

I added some solar lights so that I could enjoy in the evening.

I am happy with the result, I lost only a few fish that flopped out while getting the new liner in. Can be customized to fit your space, I ended up with about a 1500 gallon pond. I wanted the middle deep enough for the Koi to cool off in hot summer weather.

The Koi seem happy in their new pond

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Frequently asked questions
Have a question about this project?
3 of 7 questions
  • Terry Thomas Terry Thomas on Jun 22, 2019

    How do you protect your Koi in the winter months? Does the pond freeze over?

  • Erin Erin on Jun 23, 2019

    How do you keep the hunters out of your pond?

  • Barb C Barb C on Jun 24, 2019

    Love little ponds and water features.

    How does blue dye help with algae control? Thanks.

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3 of 40 comments
  • Tina Tina on Aug 06, 2019

    You may want to research "water hyacinth. It's an invasive species and not health and environmental friendly.

  • Bea52638765 Bea52638765 on Jan 23, 2022

    Hello. Love the pond idea, but doesn't it call mosquitoes and other unwanted life to the water? And what about birds and squirrels who might come in for a drink...or a deposit as they fly away? Sounds more dangerous than my old bones can deal with. But it is lovely, and I've wanted one for years. And still do!


    • Michael Scott Michael Scott on Jan 23, 2022

      The fish and filter take care of mosquito larvae. Not many squirrels, I do have alligator to keep fish hunting birds away.

      I won’t lie it is hard work.